Unsteady behavior of surge and rotating stall in an axial flow compressor

Yutaka Ota, Yutaka Fujita, Daisuke Morita

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Unsteady behaviors as well as unsteady cascade flow fields of a single-stage axial flow compressor were experimentally investigated by detail measurements of unsteady performance characteristics and casing wall pressure and internal flow velocity fluctuations. The main feature of the test compressor is a capacity tank connected directly to the compressor outlet in series through slits and a concentric duplex pipe, and also jet nozzles in order to inject compressed air toward the rotor tip region. Research attention is focused on the post-stall characteristics of surge and rotating stall which occur simultaneously. When the compressor was connected to the capacity tank, surge was generated with rotating stall in accordance with the capacitance increment of whole compressor system. The surge behavior changed irregularly with throttling valve installed behind the compressor, and several types of surge cycles were observed. In addition, the surge cycle changed by jet injection to the rotor tip region. The results suggested that the blockages of the cascade flow which were generated by a stall cell play an important role in deciding the surge behaviors.

    Original languageEnglish
    Pages (from-to)302-310
    Number of pages9
    JournalJournal of Thermal Science
    Volume21
    Issue number4
    DOIs
    Publication statusPublished - 2012 Aug

    Fingerprint

    rotating stalls
    turbocompressors
    compressors
    cascade flow
    rotors
    throttling
    jet nozzles
    compressed air
    internal flow
    wall pressure
    cycles
    casing
    outlets
    slits
    flow distribution
    flow velocity
    capacitance
    injection
    cells

    Keywords

    • Axial flow compressor
    • Jet injection
    • Rotating stall
    • Stall cell
    • Surge

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Unsteady behavior of surge and rotating stall in an axial flow compressor. / Ota, Yutaka; Fujita, Yutaka; Morita, Daisuke.

    In: Journal of Thermal Science, Vol. 21, No. 4, 08.2012, p. 302-310.

    Research output: Contribution to journalArticle

    Ota, Yutaka ; Fujita, Yutaka ; Morita, Daisuke. / Unsteady behavior of surge and rotating stall in an axial flow compressor. In: Journal of Thermal Science. 2012 ; Vol. 21, No. 4. pp. 302-310.
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